The Melancholy of Haruhi Suzumiya can be watched in any order not neccaserly numerical due to it being aired in a nonlinear order so the story line can become slightly confusing for some and episode 12 - 19 are repeates of episdoe 12 but with some small diffrences e.g, Kyon wears a hat. Over all it's good anime but can become a little tedious.